Cloth-take-up mechanism for looms



Jan. 3, 1928.

J. OTT

CLOTH TAKE-UP MECHANISM FOR LOOMS Filed $19.12, 1921 2 Sheets-Sheet 1 I INVENTOR. J59s 0% 01% BY A TTORNEYS.

Jan 3 1928.

J. OTT

CLOTH TAKE-UP MECHANISM FOR LOOMS Filed Feb.12, 1927 2 Sheets-Sheet 2 I IN VEN {a I F MM A TTORNEYS.

Patented Jan. 3, 1928.

UNITED [STATES 1,654,598 PATENT OFFICE.

JOSEPH OTT, OF PAWTUGKET, RHODE ISLAND, ASSIGNOR TO ROYAL WEAVING 00., OF PAWTUCKET, RHODE ISLAND, A. CORPORATION OF RHODE ISLAND.

CLOTH-TAKE UP MECHANISM FOR IJOOMS.

Application filed. February 12, 1927. Serial No. 167,665,

This invention relates to improvements in cloth take-up mechanism for looms and has for its object to provide in such a mechanism simple andeffective means whereby thecloth 5 roll may be instantly disconnected from its driving mechanism to be freely rotated and permit the length: of cloth to be unwound therefrom onto another or transfer roll freeing the cloth roll to again receive the next length as woven by the loom.

A further object of the invention is the provisionof a spring tensione'd' friction drive clutch through which the cloth roll is driven so as to frictionally yield or. slip to compensate for the gradually increasing winding size or diameter of the roll as the cloth is wound thereon.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings: Figure 1 is a front view illustrating the arrangement of my improved take-up mechanism.

Figure 2 is a diagrammatic view partly in section illustrating one means by which the take-up roll may be driven through ratchet mechanism by the action of the loom parts. Figure 3 is a front view illustrating fragmental portions of the take-up roll and the cloth roll and showing the drive gears on these rolls as being driven one from the other through an intermediate gear also showing the lock lever for the intermediate gear in operating position. L Figured is a View showing the train of driving gears with the lock lever raised and the intermediate gear withdrawn from engagement with the cloth roll gear releasing the cloth roll to be freelyrotated.

Figure 5 is an end view of the take-up roll and the cloth roll showing the arrangement of gears through which the cloth roll is driven from the take-up roll and showing the lock lever in full lines in position to hold the gears in mesh and in dotted-lines when moved into position to release the intermediate gear. 7

Figure 6 is a perspective view of the gearretaining arm which serves tohold the in termediate gear in operative position and also to retain the same in lnoperative posifor adjustment.

tion when moved out of mesh with one of the other gears.

It is found in the practical operation of looms, particularly those employed for weaving fine fabrics such as delicate silks or the like where the take-up roll and the cloth roll are geared together, of importance to provide a friction clutch device through which the cloth roll is driven and so arrange the tension on this clutch that it will yield or slip evenly to compensate for the gradually increasing diameter of the roll as the cloth being woven is wound upon it, as when its yield or slip is uniform the cloth is often slackened to such an extent as to cause a mark to be made by the nextbeating up stroke of the reed making imperfect work. To obviate this difliculty, I have connected the cloth roll drive gear to its roll through a friction clutch held under a constant'or uniform tension by means of a coiled spring thereby obviating the necessity It is also found of advantage to provide simple and effective means whereby the drive gears may be instantly disconnected from each other to free the cloth roll permitting the length of cloth to be unwound therefrom onto another or transfer roll so that the cloth roll may again take up the fabric as woven by the loom; and

the following is a detailed description of the present embodiment of my invention and showing one arrangement of cloth take-up mechanism by'which these advantageous results may be accomplished:

With reference to the drawing, 10 designates the side frames of a loom between which my improved cloth take-up mechanism is mounted, 11 indicating the breast beam over which the cloth as woven is led onto the take-up or sand roll 12 below,

which is mounted on the shaft 18 having end bearings at 14 in the stands 15. This roll is arranged to be driven step-by-step from any of the properly timed loom-operating mechanisms, a ratchet gearl6 being herein shown as mounted on-the short shaft 17 and a pawl 18 on the arm 19 to receive a step-by-step feeding motion from the action of the lay 20 as it comes in contact with the slide member 21. at the forward end of each ing stroke. I

. To this ratchet shaft is connected a pinion work- 22 which'meshes with the gear 23 on the end I I of the take-up roll shaft 13 by which mecha nism this take-up roll is driven in time with the loom to advance the cloth as woven to the cloth roll 24L below. This cloth roll herein shown as being mounted in the brackets 15 on itsshaft 25 and this shaft is reduced slightly as at 26, which reduced portion has a bearing as at 27 in the stand 15. The end portion of this shaft is again reduced as at 28 providing a shoulder against which the inner face of the driving gear 29 rests. This drive gear is of the plate gear construction and is recessed in its outer face as at 30 and in this recess is positioned a friction disc 31 of leather or cork. v U

Slidably mounted on this shaft is a clutch plate 32 having a portion of a diameter to just it into the recess in the gear and rest against the friction disc of leather or cork, the outer portion of this clutch plate being formed with a hub 33 over whichone end of the coiled spring 34 fits. This plate is provided with a lreyway mounted to slide axially on the pin 36 and a collar 37 is forced onto the outer end 28 of the shaft to compress and hold the spring 3% under tension and the collar is held in position by the set screw 38 whereby a flexible tension is exerted on the clutch plate and against its friction disc 31, and a uniform tension is thus applied to the cloth roll to wind the cloth thereon.

In order to drive this cloth roll 24 in time with the take-up roll 12, I have fixed a gear 39 on the take -up roll shaft 13 and have mounted an intermediate gear 10 on the short shaft d1, to transmit power from the gear 39 to the cloth roll clutch gear 29.

It is found in practice of advantage to be able to disconnect the take-up roll gear from the cloth roll gear so as to release the cloth roll to permit the cloth thereon to be wound therefrom onto a transfer roll (not shown) and then as quickly re-connect these two rolls so that the cloth may again be wound upon the cloth roll as fast as woven on the loom, and to accomplish this in a sin'lple and effective way, I have mounted this intermediate gear 40 so that it will slide endways on its short shaft 41 and in order to lock it in its operating position, I have provided a lock arm 12 having a hub 43 loosely pivoted on the pin 14: held in the loom frame 10, the lower end of this arm being notched as at 45 to swing downwardly and rest againstthc short shaft ll, its edge surface 16 engaging the hub 17 of the gear 40 whereby when this gear 40 is slid inwardly intooperating posi tion the arm 42 is dropped down to engage the hub and so look this gear against axial ,motion and whenit is desired to disconnect the cloth roll from the take-up roll, it is only necessary to swing the arm42 upwardly into dotted position illustrated in Figure. 5, which at once releases this intermediate roll to be moved axially outwardly on its shaft 41 so that its teeth will be out of mesh with those of the clutch gear 29 thereby releasing the cloth roll to be freely rotated for the purpose of unwinding its cloth. I

' In some instances it s'found of advantage to retain the teeth of the gear 40 inmesh with the gear 39 when its teeth have been entirely disconnected from the clutch gear 24, and in order to accomplish this I have formed the face of the gear 39 wider than the teeth of gear 29 so that when the intermediate gear is withdrawn from mesh with the gear 29 its teeth are still in mesh with those of gear 39 thereby facilitating the ready replacing of the gear when desired,

and this gear 40 is retained in itsinoperative position by the weight of the arm 42 which engages its face when in such posi' tion. Y

My improved cloth take-up mechanism for a loom is very simple and practical in construction and by its use the cloth is taken up uniformly on the cloth roll and the tension is set on the friction clutch plate by the loom fixer and cannot be tampered with by the loom operator, thereby eliminating the trouble heretofore experienced where the tension was adjusted by a threaded nut which could be easily moved bythe operator often to exert so great a friction on the rolls as to either tear the cloth or slip unevenly and so cause an uneven action 'of feed which in turn causes marks in thefine, or delicate fabric woven on this class of loom.

My improved take-up mechanism is extremely simple and practical in construction and is effective in its operation and by its use the take-up is uniform and the drive of the cloth roll may be quickly disconnected to release the roll for unwindingthe cloth therefrom.

, The foregoing description is directed solely towards the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to allthe mechanical changes to which the device is susceptible, the invention being defined and limited only by the terms of the appended claims.

I claim: f .i

1. In a cloth take-up mechanism for looms, a take-up roll, a cloth roll, a train of gears connecting said rolls, one gear of the train being frictionally connected to its shaft, one being wider than the others and one vbeing slidable axially out of mesh with one gear to disconnect said rolls and still remain in mesh with the wider gear,-and a readily removable detent member for retaining the movable gear in operative position while the-loom is runnlng and retaining it in inoperative positlon when moved out of mesh with one of said gears.

2. In a cloth take-up mechanism for liu one of the gears looms, a take-up roll, a cloth roll, a shaft for each roll, a train of gears connecting said rolls, one of the gears on one of said rolls being frictionally connected to its roll shaft, of the train being axially movable into and out of mesh with one of the other gears thereof, a pivoted detent arm for releasably retaining said movable gear in working position while the loom is running and arranged to retain said gear in inoperative position when moved out of mesh with one of said gears.

3. In a cloth take-up for looms, a take-up roll, a cloth roll, a shaft for each roll, a gear connected to each roll shaft, one of said gears being loosely mounted on its roll shaft and recessed in one of its side faces, a friction disc in the recess, a friction plate keyed to move axially on said shaft, a collar permanently secured to said shaft, a tension spring interposed between said collar and plate to force said plate against the disc thru which its roll is frictionally driven, and an intermediate gear transmitting motion from one roll gear to the other to be operatively disconnected from said roll gears and'as readily replaced and locked in operative position.

4. In a cloth take-up for looms, a take-up roll, a cloth roll, a shaft for each roll, a gear. connected to the roll shaft, one of said gears;

a friction plate keyed to r than those on the other rolls, an intermediate I gear transmitting motion from one roll gear to the other, said intermediate gear being axially movable into and out of mesh with one of said other gears, a pivot detent arm for releasably retaining said movable gear in working position while the loom is running and arranged to retain said gear in inoperative position when moved out of mesh with one of said gears.

In testimony whereof I aflix my signature.

JOSEPH OTT. 

